Temporary Solution Day 22

day22/day22.go

@@ -10,6 +10,68 @@ import (
 func main() {
 	//args := os.Args[1:]
 	lines := helper.ReadTextFile("day22/input")
+	commandsLine := lines[len(lines)-1]
+	commandsLine = strings.ReplaceAll(commandsLine, "R", "R,")
+	commandsLine = strings.ReplaceAll(commandsLine, "L", "L,")
+	commands := strings.Split(commandsLine, ",")
+	fmt.Println(commands)
+	part1(lines, commands)
+	part2(lines, commands)
+
+}
+
+func part2(lines []string, commands []string) {
+	fields := [][][]rune{}
+	fields, cutFields := part2Parser(lines, fields, 50)
+	currentPosition := [4]int{0, 0, 0, 0}
+	for i, c := range cutFields[0][0] {
+		if c == '.' {
+			currentPosition[1] = i
+			break
+		}
+	}
+	fmt.Println(currentPosition)
+	for i, command := range commands {
+		fmt.Println(command)
+		currentPosition = runCommand(cutFields, command, currentPosition, true)
+		fmt.Printf("%v: %v \n", i+1, currentPosition)
+	}
+	fmt.Println(currentPosition)
+	fmt.Println(1000*(currentPosition[0]+101) + 4*(currentPosition[1]+51) + currentPosition[2])
+}
+
+func part2Parser(lines []string, fields [][][]rune, sidelength int) ([][][]rune, [][][]rune) {
+	for i := 0; i < 4*sidelength; i += sidelength {
+		field := [][]rune{}
+		for j := i; j < i+sidelength; j++ {
+			line := lines[j]
+			if line == "" {
+				break
+			}
+			fieldLine := strings.ReplaceAll(line, " ", "")
+			field = append(field, []rune(fieldLine))
+		}
+		fields = append(fields, field)
+	}
+	cutFields := [][][]rune{}
+	for i := 0; i < len(fields); i++ {
+		field := fields[i]
+		if len(field[0]) < 2*sidelength {
+			cutFields = append(cutFields, field)
+		} else {
+			tmpFields := [2][][]rune{}
+			for _, fieldLine := range field {
+				tmpFields[0] = append(tmpFields[0], fieldLine[:sidelength])
+				tmpFields[1] = append(tmpFields[1], fieldLine[sidelength:])
+			}
+			cutFields = append(cutFields, tmpFields[:]...)
+		}
+	}
+	fmt.Println(len(cutFields))
+	return fields, cutFields
+}
+
+func part1(lines []string, commands []string) {
 	field := [][]rune{}
 	for _, line := range lines {
 		if line == "" {
@@ -17,30 +79,22 @@ func main() {
 		}
 		field = append(field, []rune(line))
 	}
-	commandsLine := lines[len(lines)-1]
-	commandsLine = strings.ReplaceAll(commandsLine, "R", "R,")
-	commandsLine = strings.ReplaceAll(commandsLine, "L", "L,")
-	commands := strings.Split(commandsLine, ",")
-	currentPosition := [3]int{0, 0, 0}
+	fields := [][][]rune{field}
+	currentPosition := [4]int{0, 0, 0, 0}
 	for i, c := range field[0] {
 		if c == '.' {
 			currentPosition[1] = i
 			break
 		}
 	}
-	fmt.Println(currentPosition)
 
 	for _, command := range commands {
-		fmt.Println(command)
-		currentPosition = runCommand(field, command, currentPosition)
-		fmt.Println(currentPosition)
+		currentPosition = runCommand(fields, command, currentPosition, false)
 	}
-	fmt.Println(currentPosition)
 	fmt.Println(1000*(currentPosition[0]+1) + 4*(currentPosition[1]+1) + currentPosition[2])
-
 }
 
-func runCommand(field [][]rune, command string, currentPosition [3]int) [3]int {
+func runCommand(field [][][]rune, command string, currentPosition [4]int, part2 bool) [4]int {
 	rotation := command[len(command)-1]
 	if rotation < 57 {
 		rotation = 0
@@ -48,7 +102,13 @@ func runCommand(field [][]rune, command string, currentPosition [3]int) [3]int {
 		command = command[:len(command)-1]
 	}
 	distance := helper.RemoveError(strconv.Atoi(command))
-	currentPosition = move(field, currentPosition, distance)
+	currentPosition = move(field, currentPosition, distance, part2)
+	currentPosition = rotate(rotation, currentPosition)
+
+	return currentPosition
+}
+
+func rotate(rotation uint8, currentPosition [4]int) [4]int {
 	if rotation == 'R' {
 		newDirection := currentPosition[2] + 1
 		if newDirection > 3 {
@@ -63,18 +123,22 @@ func runCommand(field [][]rune, command string, currentPosition [3]int) [3]int {
 		}
 		currentPosition[2] = newDirection
 	}
-
 	return currentPosition
 }
 
-func getDirection(currentPosition [3]int) [2]int {
+func getDirection(currentPosition [4]int) [2]int {
 	directions := [][2]int{{0, 1}, {1, 0}, {0, -1}, {-1, 0}}
 	return directions[currentPosition[2]]
 }
 
-func move(field [][]rune, currentPosition [3]int, distance int) [3]int {
+func move(fields [][][]rune, currentPosition [4]int, distance int, part2 bool) [4]int {
+	field := fields[0]
 	direction := getDirection(currentPosition)
 	for i := 0; i < distance; i++ {
+		if part2 {
+			field = fields[currentPosition[3]]
+			direction = getDirection(currentPosition)
+		}
 		tmpPosition := [2]int{currentPosition[0], currentPosition[1]}
 		tmpPosition[0] += direction[0]
 		tmpPosition[1] += direction[1]
@@ -83,7 +147,11 @@ func move(field [][]rune, currentPosition [3]int, distance int) [3]int {
 			break
 		}
 		if check == 1 {
-			currentPosition = loop(field, currentPosition)
+			if !part2 {
+				currentPosition = loop(field, currentPosition)
+			} else {
+				currentPosition = loopPart2(fields, currentPosition)
+			}
 		}
 		if check == 0 {
 			currentPosition[0] = tmpPosition[0]
@@ -114,7 +182,7 @@ func checkPosition(field [][]rune, position [2]int) int {
 	return -1
 }
 
-func loop(field [][]rune, currentPosition [3]int) [3]int {
+func loop(field [][]rune, currentPosition [4]int) [4]int {
 	direction := getDirection(currentPosition)
 	newStartPosition := [2]int{0, 0}
 	if direction[0] == 0 {
@@ -139,3 +207,156 @@ func loop(field [][]rune, currentPosition [3]int) [3]int {
 	}
 	return currentPosition
 }
+
+func loopPart2(fields [][][]rune, currentPosition [4]int) [4]int {
+	tmpPosition := getNewStartPos(currentPosition, len(fields[0][0]))
+	field := fields[tmpPosition[3]]
+	if checkPosition(field, [2]int{tmpPosition[0], tmpPosition[1]}) == 0 {
+		return tmpPosition
+	}
+	return currentPosition
+}
+
+func getNewStartPos(currentPosition [4]int, sidelength int) [4]int {
+	highestPos := sidelength - 1
+	if currentPosition[3] == 0 {
+		switch currentPosition[2] {
+		case 0:
+			currentPosition[3] = 1
+			currentPosition[1] = 0
+		case 1:
+			currentPosition[3] = 2
+			currentPosition[0] = 0
+		case 2:
+			currentPosition[3] = 3
+			currentPosition[1] = 0
+			currentPosition[0] = invertPosition(currentPosition[0], highestPos)
+			currentPosition[2] = invertDirection(currentPosition[2])
+		case 3:
+			currentPosition[3] = 5
+			currentPosition[0] = currentPosition[1]
+			currentPosition[1] = 0
+			currentPosition = rotate('R', currentPosition)
+		}
+		return currentPosition
+	}
+	if currentPosition[3] == 1 {
+		switch currentPosition[2] {
+		case 0:
+			currentPosition[3] = 4
+			currentPosition[0] = invertPosition(currentPosition[0], highestPos)
+			currentPosition[1] = highestPos
+			currentPosition[2] = invertDirection(currentPosition[2])
+		case 1:
+			currentPosition[3] = 2
+			currentPosition[0] = currentPosition[1]
+			currentPosition[1] = highestPos
+			currentPosition = rotate('L', currentPosition)
+		case 2:
+			currentPosition[3] = 0
+			currentPosition[1] = highestPos
+		case 3:
+			currentPosition[3] = 5
+			currentPosition[0] = highestPos
+		}
+		return currentPosition
+
+	}
+	if currentPosition[3] == 2 {
+		switch currentPosition[2] {
+		case 0:
+			currentPosition[3] = 1
+			currentPosition[1] = currentPosition[0]
+			currentPosition[0] = highestPos
+			currentPosition = rotate('L', currentPosition)
+		case 1:
+			currentPosition[3] = 4
+			currentPosition[0] = 0
+		case 2:
+			currentPosition[3] = 3
+			currentPosition[1] = currentPosition[0]
+			currentPosition[0] = 0
+			currentPosition = rotate('L', currentPosition)
+		case 3:
+			currentPosition[3] = 0
+			currentPosition[0] = highestPos
+		}
+		return currentPosition
+	}
+	if currentPosition[3] == 3 {
+		switch currentPosition[2] {
+		case 0:
+			currentPosition[3] = 4
+			currentPosition[1] = 0
+		case 1:
+			currentPosition[3] = 5
+			currentPosition[0] = 0
+		case 2:
+			currentPosition[3] = 0
+			currentPosition[0] = invertPosition(currentPosition[0], highestPos)
+			currentPosition[1] = 0
+			currentPosition[2] = invertDirection(currentPosition[2])
+		case 3:
+			currentPosition[3] = 2
+			currentPosition[0] = currentPosition[1]
+			currentPosition[1] = 0
+			currentPosition = rotate('R', currentPosition)
+		}
+		return currentPosition
+	}
+	if currentPosition[3] == 4 {
+		switch currentPosition[2] {
+		//Potential Error
+		case 0:
+			currentPosition[3] = 1
+			currentPosition[0] = invertPosition(currentPosition[0], highestPos)
+			currentPosition[1] = highestPos
+			currentPosition[2] = invertDirection(currentPosition[2])
+		case 1:
+			currentPosition[3] = 5
+			currentPosition[0] = currentPosition[1]
+			currentPosition[1] = highestPos
+			currentPosition = rotate('R', currentPosition)
+		case 2:
+			currentPosition[3] = 3
+			currentPosition[1] = highestPos
+		case 3:
+			currentPosition[3] = 2
+			currentPosition[0] = highestPos
+		}
+		return currentPosition
+	}
+	if currentPosition[3] == 5 {
+		switch currentPosition[2] {
+		case 0:
+			currentPosition[3] = 4
+			currentPosition[1] = currentPosition[0]
+			currentPosition[0] = highestPos
+			currentPosition = rotate('L', currentPosition)
+		case 1:
+			currentPosition[3] = 1
+			currentPosition[0] = 0
+		case 2:
+			currentPosition[3] = 0
+			currentPosition[1] = currentPosition[0]
+			currentPosition[0] = 0
+			currentPosition = rotate('L', currentPosition)
+		case 3:
+			currentPosition[3] = 3
+			currentPosition[0] = highestPos
+		}
+		return currentPosition
+	}
+	return currentPosition
+}
+
+func invertPosition(input int, highestPos int) int {
+	return highestPos - input
+}
+func invertDirection(input int) int {
+	if input > 1 {
+		return input - 2
+	} else {
+		return input + 2
+	}
+}

day22/testinput2

@@ -0,0 +1,17 @@
+    ...#..#.
+    .#......
+    #....#..
+    ........
+    ...#
+    #...
+    ....
+    ..#.
+.......#
+........
+...#.#..
+........
+...#
+....
+..#.
+....
+10R10R2L10L1R3L5L2L2L5R3L10

day22/testinput2Copy

@@ -0,0 +1,17 @@
+    0>1#..#^
+    .#v...8^
+    #.v..#^^
+    ..v..3>4
+    ..v#
+    #.2>
+    >>>>
+    ..#.
+..^....#
+..7<<<<6
+...#.#.^
+.......^
+...#
+....
+..#.
+...5>
+10R5L5R10L4R5L5R10

day22/testinput2Copy2

@@ -0,0 +1,17 @@
+    >>1#..#.
+    .#v.....
+    #.v..#..
+    <<2.....
+    ...#
+    #...
+    <8..
+    .^#.
+>3v..^.#
+6v>>>7..
+^vv#.#..
+54v.....
+..v#
+..9.
+..#.
+....
+10R3R4R3R1R2R5L3L50

day22/testinput2Copy3

@@ -0,0 +1,17 @@
+    >1.#..#8
+    .#....5>
+    #....#4<
+    ........
+    ...#
+    #...
+    ....
+    ..#.
+.......#
+..3>>>>>
+..^#.#6<
+..^...7>
+..^#
+>>2.
+..#.
+....
+1L3L4R7R1R10L1L7

day22/testinput2Copy4

@@ -0,0 +1,17 @@
+    >>1#..#.
+    7#2>>>3.
+    #....#v.
+    <<<<<<4.
+    ...#
+    #...
+    ....
+    ..#.
+>5.....#
+.v......
+<6.#.#..
+........
+...#
+....
+..#.
+....
+10R1L4R2R9R2R10

day22/testinputCopy5

@@ -0,0 +1,17 @@
+    >>1#.v#^
+    .#v..7>8
+    #.v..#..
+    ..v.....
+    ..v#
+    #.v.
+    3<2.
+    v.#.
+....v..#
+....v...
+...#v#..
+....45..
+11..#
+^6<<
+^v#.
+10v<9
+10R10R2L10L1R3L5L2L2L5R3L10